CYBT-343026-01 Start-up time until active mode

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PhDi_1589426
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Hello everyone,

I have a project where it is nessesary to know the start-up time. Meant is the time between connection to a power supply and reaching the main loop in active mode.

Does any body know how long this takes?

Thanks and best regards

Philipp

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1 Solution
SheetalJ
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First comment on KBA 750 replies posted 500 likes received

Hi philipp.dimitriou_1589426​,

50ms delay is the time of reset release after power stable. If it is 50ms or more, 20706 works normally. If it is less than 50ms, device may work but this can’t be guaranteed. The key is to guarantee reset release must be after power stable.

FYI, 15ms delay is the time of HCI command response after reset release. If it is less than 15ms, HCI command may work but this can’t be guaranteed.

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SheetalJ
Moderator
Moderator
Moderator
First comment on KBA 750 replies posted 500 likes received

Hi philipp.dimitriou_1589426​,

50ms delay is the time of reset release after power stable. If it is 50ms or more, 20706 works normally. If it is less than 50ms, device may work but this can’t be guaranteed. The key is to guarantee reset release must be after power stable.

FYI, 15ms delay is the time of HCI command response after reset release. If it is less than 15ms, HCI command may work but this can’t be guaranteed.

BoonT_56
Employee
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50ms is sure-safe. We actually explicitly specified an external voltage detector IC in the reference schematic to realize this delay.